40181011200 has 432 divisors, whose sum is σ = 160741795200. Its totient is φ = 9740390400.

The previous prime is 40181011187. The next prime is 40181011207. The reversal of 40181011200 is 211018104.

It is a tau number, because it is divible by the number of its divisors (432).

It is a super-2 number, since 2×40181011200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40181011207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1890231 + ... + 1911369.

Almost surely, 2^40181011200 is an apocalyptic number.

40181011200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40181011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80370897600).

40181011200 is an abundant number, since it is smaller than the sum of its proper divisors (120560784000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40181011200 is a wasteful number, since it uses less digits than its factorization.

40181011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21185 (or 21160 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 40181011200 its reverse (211018104), we get a palindrome (40392029304).

The spelling of 40181011200 in words is "forty billion, one hundred eighty-one million, eleven thousand, two hundred".